<template>
    <header class="header">
        <!-- 头部的第一行 -->
        <div class="top">
            <div class="container">
                <div class="loginList">
                    <p>天心欢迎您！</p>
                    <!-- 没登陆 -->
                    <p v-if="!userName">
                        <span>请</span>
                        <router-link to="/login">登录</router-link>
                        <router-link class="register" to="/register">免费注册</router-link>
                    </p>
                    <!-- 登录了 -->
                    <p v-else>
                        <a>{{ userName }}</a>
                        <a class="register" @click="loginOut">退出登录</a>
                    </p>
                </div>
                <div class="typeList">
                    <router-link to="/center/myorder">我的订单</router-link>
                    <router-link to="/shopcart">我的购物车</router-link>
                    <a href="javascript:;">我的天心</a>
                    <a href="javascript:;">天心会员</a>
                    <a href="javascript:;">企业采购</a>
                    <a href="javascript:;">关注天心</a>
                    <a href="javascript:;">合作招商</a>
                    <a href="javascript:;">商家后台</a>
                </div>
            </div>
        </div>
        <!--头部第二行 搜索区域-->
        <div class="bottom">
            <h1 class="logoArea">
                <router-link class="logo" to="/home" >
                    <img src="./images/logo.png" alt="">
                </router-link>
            </h1>
            <div class="searchArea">
                <form action="javascript:;" class="searchForm">
                    <input 
                        type="text" 
                        id="autocomplete" 
                        class="input-error input-xxlarge" 
                        v-model="keyword"
                    />
                    <button class="sui-btn btn-xlarge btn-danger" type="button" @click="goSearch">搜索</button>
                </form>
            </div>
        </div>
    </header>
</template>

<script>
    export default {
        name:'Header',
        data(){
            return{
                keyword:'',
            }
        },

        methods:{
            // 点击搜索按钮向search页面跳转
            goSearch(){
                if(this.$route.query){
                    let location = {
                        name:'search',
                        params:{keyword:this.keyword||undefined},
                    }
                    location.query = this.$route.query
                    // 给search传参
                    this.$router.push(location)
                }
            },
            // 退出登录
            async loginOut(){
                try {
                    // 1.发请求，通知服务器退出登录
                    // 2.清除数据
                    await this.$store.dispatch('userLoginOut')
                    // 回到首页
                    this.$router.push('/home')
                } catch (error) {
                    return (error.message)
                }
                
            },
        },

        mounted(){
            // 通过全局事件总线清除关键字
            this.$bus.$on('clear',()=>{
                this.keyword = ''
            })
        },
        computed:{
            // 用户名信息
            userName(){
                return this.$store.state.user.userInfo.name
            }
        }
    }
</script>

<style lang="less" scoped>
    .header {
        &>.top {
            background-color: #eaeaea;
            height: 30px;
            line-height: 30px;

            .container {
                width: 1200px;
                margin: 0 auto;
                overflow: hidden;

                .loginList {
                    float: left;

                    p {
                        float: left;
                        margin-right: 10px;

                        .register {
                            border-left: 1px solid #b3aeae;
                            padding: 0 5px;
                            margin-left: 5px;
                        }
                    }
                }

                .typeList {
                    float: right;

                    a {
                        padding: 0 10px;

                        &+a {
                            border-left: 1px solid #b3aeae;
                        }
                    }

                }

            }
        }

        &>.bottom {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;

            .logoArea {
                float: left;

                .logo {
                    img {
                        height: 110px;
                        margin: 25px 45px;
                    }
                }
            }

            .searchArea {
                float: right;
                margin-top: 70px;

                .searchForm {
                    overflow: hidden;

                    input {
                        box-sizing: border-box;
                        width: 490px;
                        height: 32px;
                        padding: 0px 4px;
                        border: 2px solid #ea4a36;
                        float: left;

                        &:focus {
                            outline: none;
                        }
                    }

                    button {
                        height: 32px;
                        width: 68px;
                        background-color: #ea4a36;
                        border: none;
                        color: #fff;
                        float: left;
                        cursor: pointer;

                        &:focus {
                            outline: none;
                        }
                    }
                }
            }
        }
    }
</style>